Origin
Tanzania, Madagascar, Kenya, Sri Lanka, Burma, Australia
Spain, Brazil, USA, Sri Lanka, Burma, Origins: Spain, Burma. Discovered in Andalusia (Spain)
Color
Green, Brown, Colorless, Greenish, Yellow
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Red
Specific Gravity
3.25-3.45
3.05-3.21
Fracture
Conchoidal, Uneven
Uneven, Subconchoidal, Splintery
Cleavage
Good on {110}
Good on {110}, poor on {100}
Chemical Composition
Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Luster
Vitreous
Vitreous, Greasy
Pleochroism
X = colorless to green; Y = colorless
strongly trichroic
Transparency
-
Transparent, Translucent
Refractive Index
1.660-1.685
1.627-1.650
Crystal System
Orthorhombic
Orthorhombic
Birefringence
0.012-0.017
0.009-0.010
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
Neurological
-
Enhances mental clarity and focus
Cardiovascular
-
Supports heart health
Psychology
Harmony
Perception
Healing
Emotional healing
Physical healing
Qualities Associated
Self-worth
Self-Realization
Kornerupine Vs Andalusite Fracture
Fracture is an important parameter when you compare Kornerupine and Andalusite Physical Properties. It is necessary to understand the significance of these properties, before you compare Kornerupine Vs Andalusite fracture. Whenever a gemstone chip breaks, it leaves a characteristic line along its breakage. Such lines are known as fracture and are used to identify the gemstones in their initial stages of production when they are in the form of rough minerals. Fracture is usually described with the terms “fibrous” and “splintery” to denote a fracture that usually leaves elongated and sharp edges. Fracture observed in Kornerupine is Conchoidal and Uneven. Andalusite fracture is Uneven, Subconchoidal and Splintery.
Kornerupine Vs Andalusite Luster
A primary knowledge about Kornerupine vs Andalusite luster is useful in apparent identifications of these gemstones. Luster is the measure of light that gets reflected when incident on a finished cut gemstone. There are two major types of lusters: Silky and Adamantine. Since luster varies between two crystals of even the same gemstone, luster is limited to basic identification criteria. Kornerupine exhibits Vitreous luster. Andalusite, on other hand, exhibits Vitreous and Greasy luster.